Frontend developer
Aetsoft
Software development company specializing in blockchain and fintech
Dec 2021 — Jun 2026Built React and React Native applications, integrated third-party services, and improved initial app load time by 50% while reaching 85% test coverage.
• architected 5+ React/Next.js applications from scratch, establishing scalable folder structures that reduced onboarding time for new developers
• integrated 15+ third-party services, including Stripe payment gateways and OAuth2 authentication, ensuring secure and compliant data handling
• built and tested React Native components and pages using Storybook
• integrated JSON Schema Web Form in React Native projects
• optimized React Native performance by refactoring heavy re-renders and upgrading dependencies, resulting in a 50% improvement in initial app load time
TeamLead
iTechArt Group
Global software engineering company
Jun 2021 — Dec 2021Led a six-person cross-functional team and mentored five junior developers, three of whom were promoted to mid-level within three months.
• led a 6-person cross-functional team through the full feature delivery cycle, managing sprint planning and stakeholder communication
• designed and implemented new custom back-office features: color picker, data grid, dynamic forms
• standardized front-end development practices by implementing ESLint and custom component libraries, reducing code review cycles
• mentored 5 junior developers, resulting in 3 promotions to mid-level roles within 3 months through structured code reviews and 1-on-1 technical guidance
Full stack developer
iTechArt Group
Global software engineering company
Jul 2020 — Jun 2021Developed NestJS APIs and React Native features, including an offline-capable app; the resume attributes an increase in user retention to the app.
• developed and maintained REST APIs using NestJS and PostgreSQL, supporting high-concurrency mobile and web integrations
• implemented a pack of core components (different questionnaire types, progress/stats screens, custom animation) for React Native app
• set up React Native navigation (Drawer, Stack, Tab)
• refactored legacy state management (Redux-Saga), improving data flow predictability and reducing memory leaks in the main dashboard
• built a complex, offline-capable React Native application with custom animations, directly contributing to a measurable increase in user retention
Full stack developer
SkillCrucial.com
Aug 2019 — Jun 2020Built a virtualized data grid for 10,000+ rows and reduced training-module server response times by about 35% through request chunking.
• virtualized a data grid component to handle 10,000+ rows, ensuring smooth UI performance on low-end devices
• re-engineered API communication by implementing request chunking, which reduced server response times by ~35% for training modules
• standardized development environments by configuring Webpack and Babel, improving build times and developer productivity
• implemented unit tests for challenge training components
• fixed HTML markdown issues
Frontend developer
Freelance
Oct 2018 — Aug 2019Developed frontend components and modular JavaScript architecture, and resolved more than 50 production JavaScript issues.
• designed and developed animation component (joining layers with configurated delay) and drag and drop using jQuery UI
• designed and implemented multi-layer modular application architecture based on MVC and events using JavaScript, ESLint, webpack, 3rd-party APIs
• implemented valid HTML/CSS markup templates (using SASS, BEM)
• debugged and resolved 50+ production JavaScript issues
